[Android] Move LoadUrl from Tab upstream.

chrome/browser/android/tab_android.cc

Index: chrome/browser/android/tab_android.cc
diff --git a/chrome/browser/android/tab_android.cc b/chrome/browser/android/tab_android.cc
index 7410dde72b60061ed30e2da1cb1549b5f3914c9b..cf4f3441badb200c698c96fa1f3fa4ec7be6912a 100644
--- a/chrome/browser/android/tab_android.cc
+++ b/chrome/browser/android/tab_android.cc
@@ -5,11 +5,18 @@
 #include "chrome/browser/android/tab_android.h"
 
 #include "base/android/jni_android.h"
+#include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/debug/trace_event.h"
 #include "chrome/browser/android/chrome_web_contents_delegate_android.h"
+#include "chrome/browser/browser_about_handler.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
+#include "chrome/browser/google/google_url_tracker.h"
+#include "chrome/browser/google/google_util.h"
+#include "chrome/browser/prerender/prerender_contents.h"
+#include "chrome/browser/prerender/prerender_manager.h"
+#include "chrome/browser/prerender/prerender_manager_factory.h"
 #include "chrome/browser/printing/print_view_manager_basic.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_android.h"
@@ -25,11 +32,15 @@
 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 #include "chrome/browser/ui/tab_helpers.h"
 #include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
+#include "chrome/common/net/url_fixer_upper.h"
+#include "chrome/common/url_constants.h"
 #include "content/public/browser/android/content_view_core.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_service.h"
+#include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 #include "jni/Tab_jni.h"
+#include "third_party/WebKit/public/platform/WebReferrerPolicy.h"
 
 TabAndroid* TabAndroid::FromWebContents(content::WebContents* web_contents) {
   CoreTabHelper* core_tab_helper = CoreTabHelper::FromWebContents(web_contents);
@@ -181,6 +192,25 @@ bool TabAndroid::ShouldWelcomePageLinkToTermsOfService() {
   return false;
 }
 
+bool TabAndroid::HasPrerenderedUrl(GURL gurl) {
+  prerender::PrerenderManager* prerender_manager = GetPrerenderManager();
+  if (!prerender_manager)
+    return false;
+
+  std::vector<content::WebContents*> contents =
+      prerender_manager->GetAllPrerenderingContents();
+  prerender::PrerenderContents* prerender_contents;
+  for (size_t i = 0; i < contents.size(); ++i) {
+    prerender_contents = prerender_manager->
+        GetPrerenderContents(contents.at(i));
+    if (prerender_contents->prerender_url() == gurl &&
+        prerender_contents->has_finished_loading()) {
+      return true;
+    }
+  }
+  return false;
+}
+
 void TabAndroid::SwapTabContents(content::WebContents* old_contents,
                                  content::WebContents* new_contents,
                                  bool did_start_load,
@@ -343,6 +373,86 @@ base::android::ScopedJavaLocalRef<jobject> TabAndroid::GetProfileAndroid(
   return profile_android->GetJavaObject();
 }
 
+TabAndroid::TabLoadStatus TabAndroid::LoadUrl(JNIEnv* env,
+                                              jobject obj,
+                                              jstring url,
+                                              jstring j_extra_headers,
+                                              jbyteArray j_post_data,
+                                              jint page_transition,
+                                              jstring j_referrer_url,
+                                              jint referrer_policy) {
+  content::ContentViewCore* content_view = GetContentViewCore();
+  if (!content_view)
+    return PAGE_LOAD_FAILED;
+
+  GURL gurl(base::android::ConvertJavaStringToUTF8(env, url));
+  if (gurl.is_empty())
+    return PAGE_LOAD_FAILED;
+
+  // If the page was prerendered, use it.
+  // Note in incognito mode, we don't have a PrerenderManager.
+
+  prerender::PrerenderManager* prerender_manager =
+      prerender::PrerenderManagerFactory::GetForProfile(GetProfile());
+  if (prerender_manager) {
+    bool prefetched_page_loaded = HasPrerenderedUrl(gurl);
+    // Getting the load status before MaybeUsePrerenderedPage() b/c it resets.
+    chrome::NavigateParams params(NULL, web_contents());
+    if (prerender_manager->MaybeUsePrerenderedPage(gurl, &params)) {
+      return prefetched_page_loaded ?
+          FULL_PRERENDERED_PAGE_LOAD : PARTIAL_PRERENDERED_PAGE_LOAD;
+    }
+  }
+
+  GURL fixed_url(URLFixerUpper::FixupURL(gurl.possibly_invalid_spec(),
+                                         std::string()));
+  if (!fixed_url.is_valid())
+    return PAGE_LOAD_FAILED;
+
+  if (!HandleNonNavigationAboutURL(fixed_url)) {
+    // Notify the GoogleURLTracker of searches, it might want to change the
+    // actual Google site used (for instance when in the UK, google.co.uk, when
+    // in the US google.com).
+    // Note that this needs to happen before we initiate the navigation as the
+    // GoogleURLTracker uses the navigation pending notification to trigger the
+    // infobar.
+    if (google_util::IsGoogleSearchUrl(fixed_url) &&
+        (page_transition & content::PAGE_TRANSITION_GENERATED)) {
+      GoogleURLTracker::GoogleURLSearchCommitted(GetProfile());
+    }
+
+    // Record UMA "ShowHistory" here. That way it'll pick up both user
+    // typing chrome://history as well as selecting from the drop down menu.
+    if (fixed_url.spec() == chrome::kChromeUIHistoryURL) {
+      content::RecordAction(base::UserMetricsAction("ShowHistory"));
+    }
+
+    content::NavigationController::LoadURLParams load_params(fixed_url);
+    if (j_extra_headers) {
+      load_params.extra_headers = base::android::ConvertJavaStringToUTF8(
+          env,
+          j_extra_headers);
+    }
+    if (j_post_data) {
+      load_params.load_type =
+          content::NavigationController::LOAD_TYPE_BROWSER_INITIATED_HTTP_POST;
+      std::vector<uint8> post_data;
+      base::android::JavaByteArrayToByteVector(env, j_post_data, &post_data);
+      load_params.browser_initiated_post_data =
+          base::RefCountedBytes::TakeVector(&post_data);
+    }
+    load_params.transition_type =
+        content::PageTransitionFromInt(page_transition);
+    if (j_referrer_url) {
+      load_params.referrer = content::Referrer(
+          GURL(base::android::ConvertJavaStringToUTF8(env, j_referrer_url)),
+          static_cast<blink::WebReferrerPolicy>(referrer_policy));
+    }
+    content_view->LoadUrl(load_params);
+  }
+  return DEFAULT_PAGE_LOAD;
+}
+
 ToolbarModel::SecurityLevel TabAndroid::GetSecurityLevel(JNIEnv* env,
                                                          jobject obj) {
   return ToolbarModelImpl::GetSecurityLevelForWebContents(web_contents());
@@ -382,6 +492,13 @@ bool TabAndroid::Print(JNIEnv* env, jobject obj) {
   return true;
 }
 
+prerender::PrerenderManager* TabAndroid::GetPrerenderManager() const {
+  Profile* profile = GetProfile();
+  if (!profile)
+    return NULL;
+  return prerender::PrerenderManagerFactory::GetForProfile(profile);
+}
+
 static void Init(JNIEnv* env, jobject obj) {
   TRACE_EVENT0("native", "TabAndroid::Init");
   // This will automatically bind to the Java object and pass ownership there.