Disable domain reliability on low-mem Android

Domain reliability uses 400k+ of memory on the heap. Disabling it until it's
refactored when running on low memory devices.

BUG=495342

Review URL: https://codereview.chromium.org/1203573002

Cr-Commit-Position: refs/heads/master@{#335767}

3 files changed, 33 insertions, 0 deletions

diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeSwitches.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeSwitches.java
index d307ecc..064c03b 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeSwitches.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeSwitches.java
@@ -156,6 +156,12 @@ public abstract class ChromeSwitches {
      */
     public static final String ENABLE_READER_MODE_BUTTON = "enable-reader-mode-toolbar-icon";
 
+    /**
+     * Disable domain reliability
+     * Native switch - switches::kDisableDomainReliability
+     */
+    public static final String DISABLE_DOMAIN_RELIABILITY = "disable-domain-reliability";
+
     // Prevent instantiation.
     private ChromeSwitches() {}
 }
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/device/DeviceClassManager.java b/chrome/android/java/src/org/chromium/chrome/browser/device/DeviceClassManager.java
index 0782840..81fad7e 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/device/DeviceClassManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/device/DeviceClassManager.java
@@ -31,6 +31,8 @@ public class DeviceClassManager {
     private boolean mEnableToolbarSwipe;
     private boolean mEnableToolbarSwipeInDocumentMode;
     private boolean mEnableUndo;
+    private boolean mDisableDomainReliability;
+
     private final boolean mEnableFullscreen;
 
     private static DeviceClassManager getInstance() {
@@ -54,6 +56,7 @@ public class DeviceClassManager {
             mEnablePrerendering = false;
             mEnableToolbarSwipe = false;
             mEnableInstantSearchClicks = false;
+            mDisableDomainReliability = true;
         } else {
             mEnableSnapshots = true;
             mEnableLayerDecorationCache = true;
@@ -62,6 +65,7 @@ public class DeviceClassManager {
             mEnablePrerendering = true;
             mEnableToolbarSwipe = true;
             mEnableInstantSearchClicks = true;
+            mDisableDomainReliability = false;
         }
 
         if (DeviceFormFactor.isTablet(ApplicationStatus.getApplicationContext())) {
@@ -154,6 +158,13 @@ public class DeviceClassManager {
         return getInstance().mEnableUndo || isAccessibilityModeEnabled(context);
     }
 
+    /**
+     * @return Whether or not to disable domain reliability.
+     */
+    public static boolean disableDomainReliability() {
+        return getInstance().mDisableDomainReliability;
+    }
+
     public static boolean isAccessibilityModeEnabled(Context context) {
         TraceEvent.begin("DeviceClassManager::isAccessibilityModeEnabled");
         AccessibilityManager manager = (AccessibilityManager)
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/init/ChromeBrowserInitializer.java b/chrome/android/java/src/org/chromium/chrome/browser/init/ChromeBrowserInitializer.java
index 07cca22..c85204a 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/init/ChromeBrowserInitializer.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/init/ChromeBrowserInitializer.java
@@ -22,6 +22,7 @@ import org.chromium.base.library_loader.ProcessInitException;
 import org.chromium.chrome.browser.ChromeSwitches;
 import org.chromium.chrome.browser.ChromiumApplication;
 import org.chromium.chrome.browser.FileProviderHelper;
+import org.chromium.chrome.browser.device.DeviceClassManager;
 import org.chromium.content.app.ContentApplication;
 import org.chromium.content.browser.BrowserStartupController;
 import org.chromium.content.browser.DeviceUtils;
@@ -82,11 +83,26 @@ public class ChromeBrowserInitializer {
     public void handlePreNativeStartup(final BrowserParts parts) {
         preInflationStartup();
         parts.preInflationStartup();
+        preInflationStatupDone();
         parts.setContentViewAndLoadLibrary();
         postInflationStartup();
         parts.postInflationStartup();
     }
 
+    /**
+     * This is needed for device class manager which depends on commandline args that are
+     * initialized in preInflationStartup()
+     */
+    private void preInflationStatupDone() {
+        // Domain reliability uses significant enough memory that we should disable it on low memory
+        // devices for now.
+        // TODO(zbowling): remove this after domain reliability is refactored. (crbug.com/495342)
+        if (DeviceClassManager.disableDomainReliability()) {
+            CommandLine.getInstance().appendSwitch(ChromeSwitches.DISABLE_DOMAIN_RELIABILITY);
+        }
+    }
+
+
     private void preInflationStartup() {
         ThreadUtils.assertOnUiThread();
         if (mPreInflationStartupComplete) return;