Stop suspending renderer and changing purge interval to 20min

content/renderer/render_thread_impl.cc

 // Copyright (c) 2012 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/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <utility>
@@ skipping 2251 matching lines @@
 void RenderThreadImpl::OnMemoryStateChange(base::MemoryState state) {
   // TODO(hajimehoshi): Adjust the size of this memory usage according to
   // |state|. RenderThreadImpl doesn't have a feature to limit memory usage at
   // present.
   if (blink_platform_impl_) {
     blink::WebMemoryCoordinator::onMemoryStateChange(
         static_cast<blink::MemoryState>(state));
   }
   switch (state) {
     case base::MemoryState::NORMAL:
-      ResumeRenderer();
       break;
     case base::MemoryState::THROTTLED:
-      ResumeRenderer();
       // TODO(bashi): Figure out what kind of strategy is suitable on
       // THROTTLED state. crbug.com/674815
 #if defined(OS_ANDROID)
       OnTrimMemoryImmediately();
 #else
       OnSyncMemoryPressure(
           base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
 #endif
       ReleaseFreeMemory();
       break;
     case base::MemoryState::SUSPENDED:
-      SuspendRenderer();
+      OnTrimMemoryImmediately();
+      ReleaseFreeMemory();
+      ClearMemory();
       break;
     case base::MemoryState::UNKNOWN:
       NOTREACHED();
       break;
   }
 }
 
-void RenderThreadImpl::SuspendRenderer() {
-  DCHECK(IsMainThread());
-  OnTrimMemoryImmediately();
-  ReleaseFreeMemory();
-  ClearMemory();
-  // TODO(bashi): Enable the tab suspension when MemoryCoordinator is enabled.
-  if (!base::FeatureList::IsEnabled(features::kMemoryCoordinator) &&
-      base::FeatureList::IsEnabled(features::kPurgeAndSuspend))
-    renderer_scheduler_->SuspendRenderer();
-}
-
-void RenderThreadImpl::ResumeRenderer() {
-  DCHECK(IsMainThread());
-  // TODO(bashi): Enable the tab suspension when MemoryCoordinator is enabled.
-  if (!base::FeatureList::IsEnabled(features::kMemoryCoordinator) &&
-      base::FeatureList::IsEnabled(features::kPurgeAndSuspend))
-    renderer_scheduler_->ResumeRenderer();
-}
-
 void RenderThreadImpl::ClearMemory() {
   // Do not call into blink if it is not initialized.
   if (blink_platform_impl_) {
     // Purge Skia font cache, by setting it to 0 and then again to the
     // previous limit.
     size_t font_cache_limit = SkGraphics::SetFontCacheLimit(0);
     SkGraphics::SetFontCacheLimit(font_cache_limit);
   }
 }
 
@@ skipping 177 matching lines @@
   }
 }
 
 void RenderThreadImpl::OnRendererInterfaceRequest(
     mojom::RendererAssociatedRequest request) {
   DCHECK(!renderer_binding_.is_bound());
   renderer_binding_.Bind(std::move(request));
 }
 
 }  // namespace content