Framework to ascribe all network data use to a source.

chrome/browser/data_use_measurement/chrome_data_use_ascriber_service.cc

+// Copyright 2016 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 "chrome/browser/data_use_measurement/chrome_data_use_ascriber_service.h"
+
+#include "base/bind.h"
+#include "base/memory/ptr_util.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/data_use_measurement/chrome_data_use_ascriber.h"
+#include "chrome/browser/io_thread.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/navigation_handle.h"
+#include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/browser/web_contents.h"
+
+namespace {
+
+data_use_measurement::ChromeDataUseAscriber* InitOnIOThread(
+    IOThread* io_thread) {
+  DCHECK(io_thread);
+  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
+
+  return io_thread->globals()->data_use_ascriber.get();
+}
+
+}  // namespace
+
+namespace data_use_measurement {
+
+ChromeDataUseAscriberService::ChromeDataUseAscriberService()
+    : ascriber_(nullptr) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  // Skip IO thread initialization if there is no IO thread. This check is
+  // required because unit tests that do no set up an IO thread can cause this
+  // code to execute.
+  if (!g_browser_process->io_thread())
+    return;
+
+  content::BrowserThread::PostTaskAndReplyWithResult(
+      content::BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(&InitOnIOThread, g_browser_process->io_thread()),
+      base::Bind(&ChromeDataUseAscriberService::SetDataUseAscriber,
+                 base::Unretained(this)));
+}
+
+ChromeDataUseAscriberService::~ChromeDataUseAscriberService() {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+}
+
+void ChromeDataUseAscriberService::RenderFrameCreated(
+    content::RenderFrameHost* render_frame_host) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  if (!ascriber_)
+    return;
+
+  int parent_render_process_id = -1;
+  int parent_render_frame_id = -1;
+  if (render_frame_host->GetParent()) {
+    parent_render_process_id =
+        render_frame_host->GetParent()->GetProcess()->GetID();
+    parent_render_frame_id = render_frame_host->GetParent()->GetRoutingID();
+  }
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO, FROM_HERE,
+      base::Bind(&ChromeDataUseAscriber::RenderFrameCreated,
+                 base::Unretained(ascriber_),
+                 render_frame_host->GetProcess()->GetID(),
+                 render_frame_host->GetRoutingID(), parent_render_process_id,
+                 parent_render_frame_id));
+}
+
+void ChromeDataUseAscriberService::RenderFrameDeleted(
+    content::RenderFrameHost* render_frame_host) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  if (!ascriber_)
+    return;
+
+  int parent_render_frame_id = -1;
+  int parent_render_process_id = -1;
+
+  if (render_frame_host->GetParent()) {
+    parent_render_process_id =
+        render_frame_host->GetParent()->GetProcess()->GetID();
+    parent_render_frame_id = render_frame_host->GetParent()->GetRoutingID();
+  }
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO, FROM_HERE,
+      base::Bind(&ChromeDataUseAscriber::RenderFrameDeleted,
+                 base::Unretained(ascriber_),
+                 render_frame_host->GetProcess()->GetID(),
+                 render_frame_host->GetRoutingID(), parent_render_process_id,
+                 parent_render_frame_id));
+}
+
+void ChromeDataUseAscriberService::DidStartNavigation(
+    content::NavigationHandle* navigation_handle) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  if (!ascriber_ || !navigation_handle->IsInMainFrame())
+    return;
+
+  content::WebContents* web_contents = navigation_handle->GetWebContents();
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO, FROM_HERE,
+      base::Bind(
+          &ChromeDataUseAscriber::DidStartMainFrameNavigation,
+          base::Unretained(ascriber_), navigation_handle->GetURL(),
+          web_contents->GetRenderProcessHost()->GetID(),
+          navigation_handle->GetWebContents()->GetMainFrame()->GetRoutingID(),

[Lei Zhang, 2016/09/09 20:58:42]

Use |web_contents| here too.

[Not at Google. Contact bengr, 2016/09/09 21:36:37]

Done.

+          navigation_handle));
+}
+
+void ChromeDataUseAscriberService::DidFinishNavigation(
+    content::NavigationHandle* navigation_handle) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  if (!ascriber_ || !navigation_handle->IsInMainFrame())
+    return;
+
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO, FROM_HERE,
+      base::Bind(
+          &ChromeDataUseAscriber::DidFinishMainFrameNavigation,
+          base::Unretained(ascriber_), navigation_handle->GetURL(),
+          navigation_handle->GetWebContents()

[Lei Zhang, 2016/09/09 20:58:42]

Same pattern as above.

[Not at Google. Contact bengr, 2016/09/09 21:36:37]

Done.

+          ->GetRenderProcessHost()
+          ->GetID(),
+          navigation_handle->GetWebContents()->GetMainFrame()->GetRoutingID(),
+          !navigation_handle->HasCommitted() ||
+          navigation_handle->IsSamePage(),
+          navigation_handle));
+}
+
+void ChromeDataUseAscriberService::DidRedirectNavigation(
+    content::NavigationHandle* navigation_handle) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  if (!ascriber_ || !navigation_handle->IsInMainFrame())
+    return;
+
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO, FROM_HERE,
+      base::Bind(
+          &ChromeDataUseAscriber::DidRedirectMainFrameNavigation,
+          base::Unretained(ascriber_), navigation_handle->GetURL(),
+          navigation_handle->GetWebContents()

[Lei Zhang, 2016/09/09 20:58:42]

One more...

[Not at Google. Contact bengr, 2016/09/09 21:36:37]

Done.

+          ->GetRenderProcessHost()
+          ->GetID(),
+          navigation_handle->GetWebContents()->GetMainFrame()->GetRoutingID(),
+          navigation_handle));
+}
+
+void ChromeDataUseAscriberService::SetDataUseAscriber(
+    ChromeDataUseAscriber* ascriber) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  ascriber_ = ascriber;
+}
+
+}  // namespace data_use_measurement