Swallow the illegal state exception when calling to printmanager

We call to printmanager the failure if webview is destroyed and a
print job is in progress. However it is possible that binder is
already finalized.
In this case simply swallow the exception.

BUG=

Review URL: https://codereview.chromium.org/1456203002

Cr-Commit-Position: refs/heads/master@{#360475}

1 files changed, 9 insertions, 4 deletions

diff --git a/android_webview/java/src/org/chromium/android_webview/AwPdfExporter.java b/android_webview/java/src/org/chromium/android_webview/AwPdfExporter.java
index d02ba66..97f84fb 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwPdfExporter.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwPdfExporter.java
@@ -78,11 +78,16 @@ public class AwPdfExporter {
     @CalledByNative
     private void setNativeAwPdfExporter(long nativePdfExporter) {
         mNativeAwPdfExporter = nativePdfExporter;
-        // Handle the cornercase that Webview.Destroy is called before the native side
-        // has a chance to complete the pdf exporting.
+        // Handle the cornercase that the native side is destroyed (for example
+        // via Webview.Destroy) before it has a chance to complete the pdf exporting.
         if (nativePdfExporter == 0 && mResultCallback != null) {
-            mResultCallback.onReceiveValue(false);
-            mResultCallback = null;
+            try {
+                mResultCallback.onReceiveValue(false);
+                mResultCallback = null;
+            } catch (IllegalStateException ex) {
+                // Swallow the illegal state exception here. It is possible that app
+                // is going away and binder is already finalized. b/25462345
+            }
         }
     }