Remove the PurgeMemory IPC message and handling code. The MemoryPurger is gone.

BUG=350455
TEST=none
R=jam@chromium.org

Review URL: https://codereview.chromium.org/198313002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256893 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 36 deletions

diff --git a/chrome/renderer/chrome_render_process_observer.cc b/chrome/renderer/chrome_render_process_observer.cc
index 60759bc..e4f6d4b 100644
--- a/chrome/renderer/chrome_render_process_observer.cc
+++ b/chrome/renderer/chrome_render_process_observer.cc
@@ -27,7 +27,6 @@
 #include "chrome/common/net/net_resource_provider.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/url_constants.h"
-#include "chrome/renderer/chrome_content_renderer_client.h"
 #include "chrome/renderer/content_settings_observer.h"
 #include "chrome/renderer/extensions/extension_localization_peer.h"
 #include "chrome/renderer/security_filter_peer.h"
@@ -39,23 +38,17 @@
 #include "net/base/net_errors.h"
 #include "net/base/net_module.h"
 #include "third_party/WebKit/public/web/WebCache.h"
-#include "third_party/WebKit/public/web/WebCrossOriginPreflightResultCache.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
-#include "third_party/WebKit/public/web/WebFontCache.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
 #include "third_party/WebKit/public/web/WebSecurityPolicy.h"
 #include "third_party/WebKit/public/web/WebView.h"
-#include "third_party/sqlite/sqlite3.h"
-#include "v8/include/v8.h"
 
 #if defined(OS_WIN)
 #include "base/win/iat_patch_function.h"
 #endif
 
 using blink::WebCache;
-using blink::WebCrossOriginPreflightResultCache;
-using blink::WebFontCache;
 using blink::WebRuntimeFeatures;
 using blink::WebSecurityPolicy;
 using blink::WebString;
@@ -323,7 +316,6 @@ bool ChromeRenderProcessObserver::OnControlMessageReceived(
     IPC_MESSAGE_HANDLER(ChromeViewMsg_GetV8HeapStats, OnGetV8HeapStats)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_GetCacheResourceStats,
                         OnGetCacheResourceStats)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_PurgeMemory, OnPurgeMemory)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetContentSettingRules,
                         OnSetContentSettingRules)
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ -411,34 +403,6 @@ void ChromeRenderProcessObserver::OnGetV8HeapStats() {
   HeapStatisticsCollector::Instance()->InitiateCollection();
 }
 
-void ChromeRenderProcessObserver::OnPurgeMemory() {
-  if (!webkit_initialized_)
-    return;
-
-  // Clear the object cache (as much as possible; some live objects cannot be
-  // freed).
-  WebCache::clear();
-
-  // Clear the font/glyph cache.
-  WebFontCache::clear();
-
-  // Clear the Cross-Origin Preflight cache.
-  WebCrossOriginPreflightResultCache::clear();
-
-  // Release all freeable memory from the SQLite process-global page cache (a
-  // low-level object which backs the Connection-specific page caches).
-  while (sqlite3_release_memory(std::numeric_limits<int>::max()) > 0) {
-  }
-
-  v8::V8::LowMemoryNotification();
-
-  // Tell our allocator to release any free pages it's still holding.
-  base::allocator::ReleaseFreeMemory();
-
-  if (client_)
-    client_->OnPurgeMemory();
-}
-
 void ChromeRenderProcessObserver::ExecutePendingClearCache() {
   if (clear_cache_pending_ && webkit_initialized_) {
     clear_cache_pending_ = false;