Fixes stuck navigation when opening PWA in-scope page in CCT.

chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java
index 709dcc617c668c231b1c3988d9f28a5fe4eea249..7d83ded5ab22840ba5e4e31078dfecf7ecf2b1f7 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java
@@ -537,7 +537,7 @@ public class CustomTabActivity extends ChromeActivity {
         }
         DataUseTabUIManager.onCustomTabInitialNavigation(mMainTab, packageName, url);
 
-        if (!mHasCreatedTabEarly && !successfulStateRestore) {
+        if (!mHasCreatedTabEarly && !successfulStateRestore && !mMainTab.isLoading()) {
             loadUrlInTab(mMainTab, new LoadUrlParams(url),
                     IntentHandler.getTimestampFromIntent(getIntent()));
         }
@@ -611,6 +611,7 @@ public class CustomTabActivity extends ChromeActivity {
             webContents = takeAsyncWebContents();
             if (webContents != null) {
                 webContentsStateOnLaunch = WEBCONTENTS_STATE_TRANSFERRED_WEBCONTENTS;
+                webContents.resumeLoadingCreatedWebContents();
             } else {
                 webContents = WarmupManager.getInstance().takeSpareWebContents(false, false);
                 if (webContents != null) {