Disable hardware acceleration for ChromeActivities on low-end devices.

chrome/android/java/AndroidManifest.xml

Index: chrome/android/java/AndroidManifest.xml
diff --git a/chrome/android/java/AndroidManifest.xml b/chrome/android/java/AndroidManifest.xml
index 8ba2b22b453a01ddf73cc42003102961e8e5f92a..5757837282e5e3993bfbfbb4b6fec8f8f192342a 100644
--- a/chrome/android/java/AndroidManifest.xml
+++ b/chrome/android/java/AndroidManifest.xml
@@ -111,6 +111,9 @@ by a child template that "extends" this file.
         <!-- Note: Set android:hardwareAccelerated to "false" in the ".Main"

[newt (away), 2015/07/16 19:46:16]

This comment in thoroughly out of date. Please remove it while you're here.

              activity below to go into software, browser tiling mode.
 
+             Note: All activities directly or indirectly derived from ChromeActivity
+             must specify android:hardwareAccelerated="false".
+
              Since this activity (shown in the launcher) and the application
              (shown in Android's Settings/Apps list) share the same label, we
              do not specify one here to allow it to inherit from the app. -->
@@ -196,7 +199,7 @@ by a child template that "extends" this file.
             android:persistableMode="persistAcrossReboots"
             android:autoRemoveFromRecents="false"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|mcc|mnc"
-            android:hardwareAccelerated="true">
+            android:hardwareAccelerated="false">
         </activity>
         <activity-alias android:name="com.google.android.apps.chrome.document.DocumentActivity"
             android:targetActivity="org.chromium.chrome.browser.document.DocumentActivity"
@@ -210,7 +213,7 @@ by a child template that "extends" this file.
             android:persistableMode="persistNever"
             android:autoRemoveFromRecents="false"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|mcc|mnc"
-            android:hardwareAccelerated="true">
+            android:hardwareAccelerated="false">
         </activity>
         <activity-alias android:name="com.google.android.apps.chrome.document.IncognitoDocumentActivity"
             android:targetActivity="org.chromium.chrome.browser.document.IncognitoDocumentActivity"
@@ -220,7 +223,7 @@ by a child template that "extends" this file.
             android:exported="false"
             android:windowSoftInputMode="adjustResize"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|mcc|mnc"
-            android:hardwareAccelerated="true">
+            android:hardwareAccelerated="false">
         </activity>
         <activity android:name="org.chromium.chrome.browser.ChromeTabbedActivity"
              android:theme="@style/MainTheme"
@@ -229,7 +232,7 @@ by a child template that "extends" this file.
              android:windowSoftInputMode="adjustResize"
              android:launchMode="singleTask"
              android:configChanges="orientation|keyboardHidden|keyboard|screenSize|mcc|mnc"
-             android:hardwareAccelerated="true">
+             android:hardwareAccelerated="false">
         </activity>
         <activity android:name="org.chromium.chrome.browser.multiwindow.MultiInstanceChromeTabbedActivity"
             android:theme="@style/MainTheme"
@@ -237,7 +240,7 @@ by a child template that "extends" this file.
             android:windowBackground="@drawable/window_background"
             android:windowSoftInputMode="adjustResize"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|mcc|mnc"
-            android:hardwareAccelerated="true">
+            android:hardwareAccelerated="false">
         </activity>
         <activity android:name="org.chromium.chrome.browser.sync.ui.PassphraseActivity"
             android:theme="@style/MainTheme"
@@ -276,7 +279,7 @@ by a child template that "extends" this file.
         </activity>
         <activity android:name="org.chromium.chrome.browser.EmbedContentViewActivity"
             android:theme="@style/ThemeWithActionBar"
-            android:hardwareAccelerated="true"
+            android:hardwareAccelerated="false"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|mcc|mnc">
         </activity>
         <activity android:name="org.chromium.chrome.browser.prerender.PrerenderAPITestActivity"
@@ -328,7 +331,7 @@ by a child template that "extends" this file.
             android:documentLaunchMode="intoExisting"
             android:windowSoftInputMode="adjustResize"
             android:persistableMode="persistNever"
-            android:hardwareAccelerated="true"
+            android:hardwareAccelerated="false"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|mcc|mnc">
         </activity>
         <activity-alias android:name="com.google.android.apps.chrome.webapps.WebappActivity"
@@ -343,7 +346,7 @@ by a child template that "extends" this file.
             android:launchMode="singleTask"
             android:windowSoftInputMode="adjustResize"
             android:persistableMode="persistNever"
-            android:hardwareAccelerated="true"
+            android:hardwareAccelerated="false"
             android:taskAffinity="{{ manifest_package }}.webapps.WebappActivity{{ i }}"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|mcc|mnc">
         </activity>