Adjust maximum decoded image size on Android

content/child/blink_platform_impl.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/child/blink_platform_impl.h"
 
 #include <math.h>
 
 #include <vector>
 
@@ skipping 988 matching lines @@
 }
 
 size_t BlinkPlatformImpl::maxDecodedImageBytes() {
 #if defined(OS_ANDROID)
   if (base::android::SysUtils::IsLowEndDevice()) {
     // Limit image decoded size to 3M pixels on low end devices.
     // 4 is maximum number of bytes per pixel.
     return 3 * 1024 * 1024 * 4;
   }
   // For other devices, limit decoded image size based on the amount of physical
-  // memory. For a device with 2GB physical memory the limit is 16M pixels.
-  return base::SysInfo::AmountOfPhysicalMemory() / 32;
+  // memory.
+  // In some cases all physical memory is not accessible by Chromium, as it can
+  // be reserved for direct use by certain hardware. Thus, we set the limit so
+  // that 1.6GB of reported physical memory on a 2GB device is enough to set the
+  // limit at 16M pixels, which is a desirable value since 4K*4K is a relatively
+  // common texture size.
+  return base::SysInfo::AmountOfPhysicalMemory() / 25;
 #else
   return noDecodedImageByteLimit;
 #endif
 }
 
 void BlinkPlatformImpl::SetFlingCurveParameters(
     const std::vector<float>& new_touchpad,
     const std::vector<float>& new_touchscreen) {
   fling_curve_configuration_->SetCurveParameters(new_touchpad, new_touchscreen);
 }
@@ skipping 16 matching lines @@
 }
 
 // static
 void BlinkPlatformImpl::DestroyCurrentThread(void* thread) {
   WebThreadImplForMessageLoop* impl =
       static_cast<WebThreadImplForMessageLoop*>(thread);
   delete impl;
 }
 
 }  // namespace content