Use a debug signature config for demo apps' release variant

PiperOrigin-RevId: 359724874

demos/cast/build.gradle

@@ -38,6 +38,7 @@ android {
                 "proguard-rules.txt",
                 "proguard-rules.txt",
                 getDefaultProguardFile('proguard-android.txt')
                 getDefaultProguardFile('proguard-android.txt')
             ]
             ]
+            signingConfig signingConfigs.debug
         }
         }
         debug {
         debug {
             jniDebuggable = true
             jniDebuggable = true

demos/gl/build.gradle

@@ -34,6 +34,7 @@ android {
             shrinkResources true
             shrinkResources true
             minifyEnabled true
             minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt')
             proguardFiles getDefaultProguardFile('proguard-android.txt')
+            signingConfig signingConfigs.debug
         }
         }
     }
     }
 
 

demos/main/build.gradle

@@ -38,6 +38,7 @@ android {
                 "proguard-rules.txt",
                 "proguard-rules.txt",
                 getDefaultProguardFile('proguard-android.txt')
                 getDefaultProguardFile('proguard-android.txt')
             ]
             ]
+            signingConfig signingConfigs.debug
         }
         }
         debug {
         debug {
             jniDebuggable = true
             jniDebuggable = true

demos/surface/build.gradle

@@ -34,6 +34,7 @@ android {
             shrinkResources true
             shrinkResources true
             minifyEnabled true
             minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt')
             proguardFiles getDefaultProguardFile('proguard-android.txt')
+            signingConfig signingConfigs.debug
         }
         }
     }
     }